ArticleRevista brasileira de ortopedia2026
Femoral Stem Subsidence in Total Hip Arthroplasty: Comparison between Fixation Principles.
Article in Revista brasileira de ortopedia, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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4 authors.
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Abstract
Objective: To compare the magnitude of subsidence between single- (SW) and double-wedge (DW) femoral stems in primary total hip arthroplasties (THAs), and to identify factors associated with clinically relevant subsidence. Methods: Retrospective cohort study with 82 patients (164 hips) undergoing bilateral THA between 2012 and 2022, each receiving type-I (Corail) and -II (Summit) stems, both manufactured by DePuy Synthes. Subsidence was measured radiographically up to 6 months postoperatively and was considered clinically relevant when greater than 3 mm. Radiographic variables included cortical enlargement index (CEI) and canal fill rate (CFR). Statistical analyses included paired t-test, logistic regression, and Spearman correlation. Results: The mean subsidence was 1.93 ± 1.16 mm in type-I stems and 2.23 ± 1.57 mm in type-II ( Conclusion: The DW stems were associated with a higher risk of clinically relevant subsidence. In bilateral THA, subsidence is more pronounced at first surgery, with no detectable influence of demographic or radiographic factors.
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